146 results about "Organic matrix" patented technology

The embodiment of the invention provides a heat-conducting and wave-absorbing composition and application thereof. The composition comprises an organic matrix, a heat-conducting filler and a wave-absorbing filler, the heat-conducting filler comprises large-particle-size heat-conducting particles and small-particle-size heat-conducting particles, and the large-particle-size heat-conducting particles comprise high-sphericity and high-purity silicon carbide filler; wherein the sphericity degree of the high-sphericity-degree and high-purity silicon carbide filler is 0.8 or above, and the mass content of silicon carbide is greater than or equal to 99.0%; the wave-absorbing filler comprises spherical carbonyl iron and flaky carbonyl iron. The large-particle-size heat-conducting particles in the composition comprise the silicon carbide filler, so that the fluidity and the heat-conducting property of the composition are good, and the wave-absorbing property of the composition is good due to the synergistic cooperation of the silicon carbide filler, the spherical carbonyl iron and the flaky carbonyl iron; the requirements of the field of electronic equipment on heat-conducting and / or wave-absorbing functional materials with excellent comprehensive performance can be met.

The invention discloses a passive radiation-cold storage composite box body and a preparation method. The box body sequentially comprises a composite radiation film, a heat insulation layer and a cold storage layer from outside to inside. The outer-layer radiation film is composed of an elastic organic matrix and high-reflection inorganic particles such as barium sulfate, has high solar reflectivity and mid-infrared high emissivity, and can effectively restrain solar absorption and achieve radiation heat dissipation in the daytime. The heat insulation layer is made of XPS, EPS, aerogel felt and other low-heat-conduction materials so as to reduce external heat transfer. Phase change microcapsules are dispersed in the cold storage layer, and flake graphite and other high-thermal-conductivity fillers can be added to improve the cold transfer efficiency and temperature uniformity. And the phase-change material realizes automatic cold storage and cold release through a latent heat mechanism, so that the temperature in the box body is kept stable. Through the synergistic effect of radiation refrigeration, heat insulation and phase change cold storage, long-time and recyclable passive cold chain temperature control is achieved, and the device has the advantages of being simple and convenient in structure, high in cost performance, flexible in application, uniform in internal temperature distribution and the like.

The invention relates to a method (100) for manufacturing a bladed part (1) for an aircraft turbine engine, this bladed part being made of an organic matrix composite (OMC) material, the method comprising the following steps: - (110) providing a moulding core (10) made of a material having a melting point denoted T1, the moulding core having a general elongate shape along an axis of elongation (X2) and comprising a first positioning protrusion (20) located at least at one of its ends (11, 12); - (120) producing a first fibrous preform (50) by three-dimensional weaving, this first preform comprising a body (54) having a general elongate and tubular shape and comprising a cavity (57) which extends along an axis of elongation (X1) of the first preform and which opens out at the opposite axial ends (51, 52) of the body (54); - (130) inserting the moulding core into the cavity so that the axes of elongation of moulding core and cavity coincide, the first positioning protrusion (20) extending out of the cavity.

This invention belongs to the field of functional polymer composite materials technology, and more specifically relates to a titanium oxide cluster composite fiber membrane with broad-spectrum photoresponse, its preparation method, and its applications. The preparation method includes: using 3-fluorocatechol and titanate as reactants, a solvothermal reaction is carried out under an inert atmosphere to obtain trifluorocatechol-modified titanium oxide cluster crystals; then, these crystals are dissolved with thermoplastic polyurethane particles in an organic solvent to prepare a composite spinning solution, which is then electrospun and dried to obtain the composite fiber membrane. In this fiber membrane, the titanium oxide clusters are uniformly dispersed at the nanoscale, forming a three-dimensional porous network structure with a diameter of 100-1000 nm, exhibiting broad-spectrum strong absorption (300-1000 nm), superhydrophobicity, and excellent photothermal properties. This invention effectively solves the problem of inorganic nanoclusters agglomeration in organic matrices through surface modification, achieving synergistic antibacterial effects through photothermal and photocatalytic processes, and has broad application prospects in medical protection, intelligent thermal management textiles, and environmental purification.

The invention relates to the technical field of road engineering materials, and particularly discloses an ultra-thin anti-sliding layer material based on industrial solid waste. According to the composite filler provided by the invention, the waste plastic, the fly ash and the polymer coated rubber powder are compounded, and a continuous network or sea island structure is formed by the waste plastic, so that rubber powder particles are effectively locked, and the softening flow of the rubber powder particles at high temperature is inhibited, thereby greatly improving the rut resistance of an anti-skid layer material; the elastic particles of the rubber powder are also used as stress concentration points and flexible buffer units, so that the brittle crack propagation of the plastic phase at low temperature is prevented, and the low-temperature crack resistance is improved; the silanized fly ash serves as rigid particles and is dispersed in an organic matrix, when the material is stressed, the rigid particles can bear and disperse stress and improve modulus and compressive strength, after the material is treated by a silane coupling agent, the fly ash particles and organic phases (rubber powder and plastic) form chemical bonds or strong physical adsorption, stress is effectively transmitted at an interface, and the mechanical property of the material is improved. The toughness of the material is improved.

An impact energy dissipation plate for anti-ballistic armor, the dissipation plate including a damping material including a fibrous reinforcement bonded by an organic matrix including a thermosetting resin, the reinforcement including inorganic fibers assembled in the form of yarns, the damping material having the following features the volume fraction of fibrous reinforcement of the damping material is between 20% and 70%, the remainder to 100% including the matrix and porosity; the fibrous reinforcement includes at least 50% by volume of silica fiber yarns of which SiO2 content by mass of more than 90%, and the porosity of the damping material is between 2% and 10% by volume.

The invention provides a photochromic material as well as a preparation method and application thereof. The photochromic material has a molecular structure as shown in a formula I. In the formula I, R1 is a C1-C20 alkyl group, R2 is a propylidene group or an ethylidene aminopropyl group, R3 is a C1-C5 alkyl group, R4 is a C1-C20 alkyl group or aryl group, and a is 0 or 1. By chemically improving the molecular structure of the photochromic material, the compatibility of the photochromic material in an organic matrix can be improved, and meanwhile, through the combined action of specific groups (such as an active amino unit, a polar N, S-acetal unit and an aromatic ring skeleton), the rapid photochromic reaction and the adhesion with a base material can be further ensured; the color change stability is further improved, and the service life of a photochromic product is prolonged. # imgabs0 #

The present invention relates to an enhanced catalytic nickel oxide sheet having an organic part which includes non-stoichiometric nickel oxides dispersed in an organic matrix, wherein the catalytic sheet is supported on a substrate. The invention also relates to a method for obtaining the catalytic film and to its uses as an electrode in electrocatalysis of water or in photocatalysis.

The invention relates to a rod (20) for a pneumatic tire (10), comprising: at least one strand of glass fiber embedded in an organic matrix, wherein the diameter D of the rod (20) is from 14 to 25 mm and wherein the breaking strength (Fm) of the rod (20) is greater than or equal to 150 kN. Figure for abbreviation: Fig. 2

The present invention discloses a method for constructing a dual-omics plasma fingerprint model and an infection diagnosis device of the dual-omics plasma fingerprint model constructed by using this method, which relates to the technical field of infection disease diagnosis. The construction method includes preprocessing plasma samples, preparing matrix materials, spotting samples and matrixes on a mass spectrometry target plate, collecting plasma metabolite fingerprints in nanoparticle-enhanced laser desorption ionization mass spectrometry, and collecting plasma protein fingerprints in organic matrix material-assisted laser desorption ionization mass spectrometry. The infection diagnosis device performs data analysis on the dual-omics plasma fingerprint map to obtain a diagnosis result, and has advantages such as high detection reproducibility, fast analysis speed, and less sample consumption, realizing high-efficiency diagnostic performance for different infection types.

The invention relates to a method for repairing a part (100) made of an organic matrix composite material at least partially covered with an erosion control film (30), the method comprising the following steps: - removing the erosion control film from a damaged area (50) of the part, - removing an initial adhesive (32) that initially fixed the film to the damaged area to form a hollow portion (55), - applying a repair adhesive (38) to the hollow portion (55) or to one face of a patch of a replacement erosion control film (30') shaped to replace the film in the damaged area, - applying the patch of the replacement film (30') to the damaged area, - polymerizing the repair adhesive (38) at a polymerization temperature below 100°C, forming a repaired area (60) in place of the damaged area (50). Figure 8 (for the abstract)

The present invention relates to a hollow propeller blade (1) or hollow vane (1) made of organic matrix composite material, comprising (i) a first portion (3) defining an aerodynamic profile and comprising a first fibre reinforcement obtained by three-dimensional weaving, and (ii) a hollow second portion (5), located inside the first portion and rigidly attached to the first portion, wherein the second portion comprises a second fibre reinforcement comprising a fibre stack of at least (a) a first layer of unidirectional fibres oriented between -65° and -25° with respect to a radial direction (DR) of the vane or propeller blade; and (b) a second layer of unidirectional fibres oriented between +25° and +65° with respect to the radial direction. The present invention also relates to associated manufacturing methods.

The invention relates to a method for manufacturing a blade or vane made of composite material, comprising: - obtaining (E10) an insert, comprising the production of a fibrous stack having a predetermined fibrous orientation by an automatic fiber placement technique, the composite insert comprising said fibrous stack impregnated with a thermosetting polymer, - obtaining (E12) a porous fibrous reinforcement obtained by three-dimensional weaving and having a disconnection defining two disconnected fibrous portions, - obtaining (E20) a fibrous assembly by introducing the insert inside the porous fibrous reinforcement, the insert thus introduced giving its shape to the reinforcement, - introducing (E30) a thermosetting resin into the porous fibrous reinforcement after the fibrous assembly has been obtained, and - co-curing (E40) the thermosetting resin thus introduced with the thermosetting polymer.

Method for manufacturing a part made of composite material for a turbomachine incorporating in-situ repair of a warp fiber. The invention relates to a method for manufacturing a part made of composite material such as a blower blade with in-situ repair of a warp fiber which comprises the steps: 1) weaving of a fibrous blank; 2) shaping of the fibrous blank to obtain a fibrous preform; 3) densification of the fibrous preform with an organic matrix so as to obtain the part made of composite material; characterized in that during step 1): i) a break point is detected on a warp fiber (11), ii) a thermoplastic polymer (13) is applied to the warp fiber (11) at the detected break point, iii) the two free ends (11a, 11b) of the warp fiber (11) are welded together by polymerizing the thermoplastic polymer (13) so as to eliminate the break point. Figure for the summary: Fig. 3.

The invention discloses a preparation method of a gelatin nano SiO2 mineralized poplar composite material, which comprises the following steps: by taking fast-growing poplar as a raw material, introducing an organic matrix gelatin to mediate SiO2 mineralized poplar on the basis of a biomimetic mineralization principle; the preparation method comprises the following steps: mixing tetraethoxysilane serving as a silicon source with water, and controlling the pH value of a SiO2 precursor solution by taking hydrochloric acid as a catalyst; then dipping the SiO2 precursor solution into poplar in a vacuum pressurization mode to construct a poplar biomimetic mineralization microenvironment; and finally, inducing SiO2 to quickly deposit in poplar pores and cell walls through gelatin to form an organic-inorganic hybrid structure so as to prepare the gelatin nano-SiO2 mineralized poplar composite material. The physical properties of the gelatin nano-SiO2 mineralized poplar composite material are remarkably improved, the absolute dry density is increased, the radial and chordwise saturated water swelling rate and the 24-hour water absorption rate are reduced, the dimensional stability is enhanced, and the flame retardance is good; according to the method, the performance and the additional value of the poplar are improved, and the application range of the poplar in high-grade wood products and structural materials is widened.

The invention relates to a method for assembling a first metal part with a second part made of an organic matrix composite material, the first part having a first connecting portion and the second part having a second connecting portion, the method comprising the steps of:causing the first connecting portion and the second connecting portion to overlap, a through-hole of the second connecting portion opening onto the first connecting portion,forming a protective layer on the side wall of the through-hole,forming a seal between the protective layer and the first connecting portion, andforming, by additive manufacturing using cold gas spray deposition of metal powder, a fastening element which extends into the through-hole, is fastened to the first connecting portion and encloses the second connecting portion.

The invention discloses a novel liquid metal microcapsule heat conduction material, and relates to the technical field of heat conduction materials, and the novel liquid metal microcapsule heat conduction material comprises the following steps: S1, microcapsule preparation; s2, dispersing and compounding; and S3, curing and applying. According to the novel liquid metal microcapsule heat conduction material, high heat conduction and insulation are synergistic, a liquid metal core provides a high heat conduction path, a polymer shell ensures insulation, the performance bottleneck of a traditional material is broken through, and according to the microcapsule structure design, liquid metal (gallium-based alloy) is packaged in a flexible polymer leather film (PDMS / PU / ACRYLIC), high heat conduction is kept, and insulation is achieved. And a composite dispersion process: uniformly dispersing the microcapsules in a liquid organic matrix by adopting an ultrasonic dispersion technology to form a three-dimensional heat-conducting network. The heat conductivity coefficient of a finished product reaches 10 W / m.K or above, the minimum thermal resistance can reach 0.02 thermal resistance DEG C * cm < 2 > / W, and meanwhile, the heat-resistant and high-viscosity flexible cable has insulativity, heat resistance, high viscosity and bendability.

The invention relates to the technical field of MicroLED display, and particularly discloses a nanocrystalline color conversion layer for a MicroLED and a preparation method of the nanocrystalline color conversion layer. A nanocrystalline color conversion layer is formed at a low temperature of 150-400 DEG C by co-evaporating a perovskite precursor and an organic matrix material containing a P = O / S = O / C = O group. A magnetic metal mask is adopted, the distance between the mask and a substrate is controlled to be smaller than or equal to 0.5 mm, and a high-resolution patterned nanocrystalline color conversion layer is achieved. The dynamic vacuum degree of 5 * 10 <-4 > to 5 * 10 <-5 > Pa is maintained in the evaporation process, the deposition rate is 0.01-5 nm / s, the thickness of the obtained color conversion layer is 500-3000 nm, and the interface roughness Ra is smaller than 10 nm. The optical property of the nanocrystal is improved in situ through the matrix material, so that the fluorescence quantum yield reaches 85% or above, and the color gamut is gt; a 120% NTSC; mask design and process parameters are optimized, blockage is avoided, and pattern precision is improved; the full-dry process is compatible with mass production, and the yield is greater than 95%. The color conversion layer solves the problems of efficiency and stability in MicroLED full-color conversion.

The invention relates to a method for monitoring the manufacture of an organic matrix composite material, said method comprising: a) manufacturing (100), by assembling carbon fibres, a conductive layer having a useful portion intended to form a conductive ply of the organic matrix composite material to be manufactured and at least two excess portions protruding from the useful portion, b) inserting (120) electrical connectors, each one into at least one excess portion, c) connecting (130) an excitation and measurement device to each electrical connector, d) monitoring (140) one or more steps of manufacture of the organic matrix composite material from the conductive layer by means of the device, by supplying said layer with electrical energy and measuring an electrical value thereof, and e) removing (150) each excess portion.

The invention provides a special light conversion agent for a light conversion adhesive film, a preparation method of the special light conversion agent and application of the special light conversion agent to a commercial light conversion adhesive film, the light conversion agent takes porous SrSi2O2N2: Eu < 2 + > microspheres as a core and SiO2 as a shell, a silane coupling agent is grafted on the surface of SiO2, and an inorganic fluorescent additive is subjected to surface modification through the silane coupling agent, so that the light conversion agent is obtained. And forming an organic binding layer of organic matrix-silane coupling agent-inorganic fluorescent powder light conversion agent. According to the method, the sites of the light conversion agent in the adhesive film are fixed and uniformly dispersed, so that the compatibility of the light conversion agent and the adhesive film matrix is greatly improved, and the stability of the light conversion effect of the photovoltaic adhesive film is improved.

According to the branched chain type silane coupling agent as well as the preparation method and the application thereof, a plurality of organic functional groups for anchoring an organic matrix are introduced, and the structures, the number and the positions of the functional groups are optimized, so that the interface performance between an organic material and inorganic nanoparticles is greatly improved, the steric hindrance of a reaction is reduced, and the reaction time is shortened; the modification effect of the nano particles is improved. Taking titanium dioxide nano particle modification as an example, the transmittance of titanium dioxide dispersion liquid modified by the branched chain type silane coupling agent provided by the invention can reach 93%.

The present invention concerns an optoelectronic device, in particular an optical wavelength-converter or an infrared (IR) emitting or IR photodiode device, comprising an organic matrix-based material, wherein the organic matrix-based material is coated with at least one layer comprising an amorphous fluoropolymer. The invention also pertains to a method for the production of such an optoelectronic device.

The invention relates to a cryogenic propellant tank for a spacecraft engine, the tank comprising a wall that defines a storage volume for the cryogenic propellant, the wall being made of a composite material and comprising a fibrous reinforcement in the form of a fibrous stack (110) which is densified by an organic matrix, the fibrous stack comprising at least in succession and in this order in the direction of the thickness (E) of the wall: (a) a first ply (113) having unidirectional fibres oriented at an angle of –α; (b) a second ply (115) having unidirectional fibres oriented at an angle of -β°; (c) a third ply (117) having unidirectional fibres oriented at an angle of +α; and (d) a fourth ply (119) having unidirectional fibres oriented at an angle of +β°, with α ranging from 5° to 20° and β ranging from 40° to 50°, wherein each angle is taken with respect to a longitudinal axis of the tank.

The invention provides weather-resistant optical functional coating nanoparticles as well as a preparation method and application thereof, and belongs to the field of coatings. The nano particle comprises an inner core and an outer core, wherein the inner core is made of a near-infrared reflecting material; the near-infrared reflection material adopts metal oxide nanoparticles with a near-infrared reflection function; the first wrapping layer is a silicon dioxide middle layer and wraps the inner core; and the second wrapping layer is an aluminum oxide passivation layer and wraps the silicon dioxide intermediate layer. And the nano particles are used as functional filler of the weather-resistant optical functional coating. According to the core-shell structured nanoparticles provided by the invention, the specific passivation layer is introduced, so that the near-infrared reflection function of the core material is retained, and the photocatalytic damage of the core material to an organic matrix is fundamentally eliminated, thereby obtaining the coating with long-acting stability, high visible light transmittance, excellent spectral selectivity and weather resistance.

This invention discloses a neutron shielding material with a biomimetic chlorophyll structure and its preparation method, belonging to the field of artificial fiber technology. The method includes: S1, surface hydrophobic modification of boron-containing compounds and transition metal carbon / nitrides using a bifunctional silane coupling agent; S2, preparation of a core layer suspension containing modified powder and a shell layer solution containing a hydrophobic polymer; S3, construction of a wet precursor fiber membrane with a core-shell structure using coaxial electrospinning; S4, induction of solvent directional crystallization through directional temperature gradient field cryogenic treatment, followed by sublimation drying to form a biomimetic layered porous structure inside the core layer; S5, heat treatment to solidify the biomimetic layered structure. This invention solves the interfacial compatibility problem between inorganic fillers and organic matrices through the synergistic effect of interfacial chemical modification and biomimetic structural regulation, achieving spatially ordered arrangement of functional components. The resulting material possesses excellent lightweight properties, structural stability, and neutron shielding effectiveness.

The invention relates to a method for repairing a part (100) made of an organic-matrix composite material at least partially covered with an anti-erosion film (30), the method comprising the following steps: - removing the anti-erosion film from a damaged area (50) of the part; - removing an initial adhesive (32), initially attaching the film to the damaged area, so as to form a recessed portion (55); - depositing a repair adhesive (38) in the recessed portion (55) or on one face of a patch of a replacement anti-erosion film (30') shaped to replace the film of the damaged area; - placing the patch of the replacement film (30') on the damaged area; - and polymerising the repair adhesive (38) at a polymerisation temperature of less than 100°C forming a repaired area (60) to replace the damaged area (50).

The invention relates to a method for producing an assembly, comprising:-forming an assembly (1) comprising two fibrous textures (3, 5) placed one above the other, and at least one spacer element (10) present on a boundary (7) between the two textures and defining a flow channel (12) communicating the two textures; -shaping the component by applying a compression pressure (PC); and-co-densifying the textures of the component shaped in this way, comprising injecting a resin (20) into the pores of these textures, the resin flowing into the flow channels of the spacer elements so as to join the textures on the interface, the spacer elements (i) being made of a polymeric material having a glass transition temperature Tg greater than the temperature Tr of the resin introduced into the mold cavity, and the spacer elements (i) being made of a polymeric material having a glass transition temperature Tg greater than the temperature Tr of the resin introduced into the mold cavity; or (ii) is made of a metal material.

The invention relates to a component (11) for an aircraft turbomachine, the component (11) comprising:-a body (12) comprising a composite material comprising an organic matrix and fibres embedded in the matrix, and-a fire barrier (13) arranged on at least one surface of the body (12), characterized in that the body (12) comprises at least one surface of the body (12); the fire barrier (13) is multilayer and comprises:-a perforated first layer (14) comprising glass fibers, and-a second layer (15) comprising fibers different from the glass fibers, the first layer (14) being located between the body (12) and the second layer (15).

The invention relates to the field of analytical chemistry and material testing, and mainly relates to a silicon dioxide determination method resistant to organic silicon matrix interference. The invention relates to an organosilicon matrix interference-resistant silicon dioxide determination method, which comprises: introducing an inert atmosphere, and removing oxygen; in the inert atmosphere environment, the temperature of the sample is gradually increased to 500-850 DEG C for treatment; the atmosphere is switched from the inert atmosphere to the oxidizing atmosphere, and treatment continues to be conducted at the temperature of 500-850 DEG C; and cooling and weighing to obtain the final residual mass percentage, namely the percentage of the added silicon dioxide in the sample. According to the application, through an innovative'inert pyrolysis-oxidation sweeping 'procedure, the principle defect that an organic matrix is misjudged as functional silicon dioxide by a traditional muffle furnace ashing method is fundamentally overcome.